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Finding the Fourth Proportional to 653,513,999.20, 917,215,424 and 653,513,999.20

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Solution

The fourth proportional to 653,513,999.20, 917,215,424 and 653,513,999.20 is: 917,215,424

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,513,999.20 : 917,215,424 = 653,513,999.20 : x
  2. Step 2: Convert to fraction form
    653,513,999.20/917,215,424 = 653,513,999.20/x
  3. Step 3: Cross multiply
    653,513,999.20x = 917,215,424 × 653,513,999.20
  4. Step 4: Simplify right side
    653,513,999.20x = 599,413,119,866,163,712
  5. Step 5: Solve for x
    x = 599,413,119,866,163,712/653,513,999.20
  6. Step 6: Final answer
    x = 917,215,424

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.